Fig. 5

Distribution of solution in wood sample at each stage of the processes. Formula in each element represents its mass and/or volume. m _O and v _O, mass and volume of the untreated samples, respectively; f _E, mass ratio of migrated extract to the untreated sample; α(0) and α _V, swelling coefficient just before conditioning and after all processes, respectively; ρ _CW, ρ _E, ρ _S, and ρ _C, densities of wood substance, extract, solution, and solute, respectively